发明申请
- 专利标题: SUPERCHARGED DIRECT-INJECTION ENGINE
- 专利标题(中): 超级直喷式发动机
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申请号: US12728830申请日: 2010-03-22
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公开(公告)号: US20110067679A1公开(公告)日: 2011-03-24
- 发明人: Mitsuo HITOMI , Masahisa YAMAKAWA , Takashi YOUSO , Toshiaki NISHIMOTO , Keiji ARAKI
- 申请人: Mitsuo HITOMI , Masahisa YAMAKAWA , Takashi YOUSO , Toshiaki NISHIMOTO , Keiji ARAKI
- 申请人地址: JP Hiroshima
- 专利权人: MAZDA MOTOR CORPORATION
- 当前专利权人: MAZDA MOTOR CORPORATION
- 当前专利权人地址: JP Hiroshima
- 优先权: JP2009-085670 20090331
- 主分类号: F02B33/00
- IPC分类号: F02B33/00
摘要:
Disclosed is a supercharged direct-injection engine, which comprises a supercharging device (25, 30) for compressing intake air, and an injector 10 for directly injecting fuel into a combustion chamber 5. In the engine, an excess air factor λ as a ratio of an actual air-fuel ratio to a stoichiometric air-fuel ratio, at least in an engine warmed-up mode, is set to 2 or more in the entire engine-load region. Further, compressed self-ignited combustion is performed in a low engine-load region, and a supercharging amount by the supercharging device (25, 30) is increased along with an increase in engine load in a high engine-load region to allow the excess air factor λ to be kept at 2 or more. The engine of the present invention can effectively reduce NOx emission, while improving fuel economy.
公开/授权文献
- US08468823B2 Supercharged direct-injection engine 公开/授权日:2013-06-25